7523.08% is the change from 13 to 991
Calculation steps:
[( 991 - 13 ) ÷ 13] x 100 = 7523.08%
Formula
Percentage change = [(991 - 13) / 13] x 100
Subtract the new number by the original number
991 - 13 = 978
978 ÷ 13 = 75.23076923076923
75.23076923076923 x 100 = 7523.08%